Add paper liners to a standard cupcake pan.
In a large bowl, beat graham cracker crumbs, pumpkin puree, cream cheese, powdered sugar and pumpkin pie spice until well combined. Note: mixture will be thick.
Chill pumpkin mixture in the refrigerator for 30 minutes before melting chocolate.
Chop 6 ounces of white chocolate then microwave in a heat-safe bowl in 30 second intervals, stirring after each, until melted and smooth.
Spoon an equal amount of white chocolate into each cupcake liner then brush chocolate halfway up the sides to coat.
Rap pan on the counter a few times then freeze for 10 minutes until set.
Divide pumpkin mixture into 12 equally sized balls. Place one pumpkin ball into each cupcake liner then flatten the top of the ball with your fingers.
Melt remaining white chocolate in the microwave then spoon on top of pumpkin cups in an even layer.
Freeze 10 minutes until set.
Serve chilled.
Store leftover candy cups in an airtight container in the refrigerator.